sailsjs 的考试应用程序模型结构 API

Question

我正在构建一个用于考试练习的移动应用程序。我需要一个 API 端点来获取考试详情和问题。我需要帮助来构建 sails.js 中的数据。我想到了这个来自 firebase 的 JSON 结构。

端点 GET 操作应该 return 这个：

         {
            "8h9iuhiuhi89h98h": {
              "exam": "waec",
              "year": "1990",
              "subject": "chemistry",
              "question": "Which of these is not an acid",
              "answers": [
                {
                 option: "NaCl",
                 isValid: true
                },
                {
                 option: "H<sub>2</sub>SO<sub>4</sub>",
                 isValid: false
                 },
                {
                 option: "H<sub>3</sub>", 
                 isValid: false
                },
                {
                 option: "HCl",
                 isValid: false
                }
              ]
            },
            "8h9iuhiuhi89h98h": {
              "exam": "waec",
              "year": "1990",
              "subject": "chemistry",
              "question": "Which of these is not an acid",
              "answers": [
                {
                 option: "NaCl",
                 isValid: true
                },
                {
                 option: "H<sub>2</sub>SO<sub>4</sub>",
                 isValid: false
                 },
                {
                 option: "H<sub>3</sub>", 
                 isValid: false
                },
                {
                 option: "HCl",
                 isValid: false
                }
              ]
            },
"8h9iuhiuhi89h98h": {
              "exam": "waec",
              "year": "1990",
              "subject": "chemistry",
              "question": "Which of these is not an acid",
              "answers": [
                {
                 option: "NaCl",
                 isValid: true
                },
                {
                 option: "H<sub>2</sub>SO<sub>4</sub>",
                 isValid: false
                 },
                {
                 option: "H<sub>3</sub>", 
                 isValid: false
                },
                {
                 option: "HCl",
                 isValid: false
                }
              ]
            },
            "8h9iuhiuhi89h98h": {
              "exam": "waec",
              "year": "1990",
              "subject": "chemistry",
              "question": "Which of these is not an acid",
              "answers": [
                {
                 option: "NaCl",
                 isValid: true
                },
                {
                 option: "H<sub>2</sub>SO<sub>4</sub>",
                 isValid: false
                 },
                {
                 option: "H<sub>3</sub>", 
                 isValid: false
                },
                {
                 option: "HCl",
                 isValid: false
                }
              ]
            }      
    }

其中 waec 是考试，1990 是年份，化学是主题。

http://someappurl.com/api/exam/{exam}/{year}/{subject}

我使用 sails generate 命令生成了 API。但我不知道如何构建和查询我的数据。我如何构建我的架构？我有一个像这样的帆模型结构

   attributes: {
    exams: {
      exam_name: 'string',
      years: {
        exam_year: 'string',
        subjects:[
          {
            subject_name: 'string',
            questions: [
              {
                serial_no: 'string',
                text: 'string',
                answers:[
                  {
                    option: 'string',
                    is_valid: 'boolean'
                  }
                ]
              }
            ]
          }
        ]
      }
    }
  }

Answer 1

您没有正确使用模型。认为每个 Model.js 是一个 table 并且每个属性是一列。

所以，你的 Exam.js 可以是这样的：

// api/models/Exam.js
module.exports = {
  attributes: {
    name: {
      type: 'string',
    },
    year: {
      type: 'integer'
    },
    subject: {
      type: 'string',
    },
    question: {
      type: 'string',
    },
    answers: {
      type: 'array',
    }
  }
};

并且在控制器上，您将定义如何显示来自数据库的数据。您可以在文档中了解有关 Sails 模型和控制器的更多信息：

示例项目：

https://scotch.io/tutorials/build-a-sailsjs-app-from-api-to-authentication

sailsjs 的考试应用程序模型结构 API

exam app model structure for sailsjs API

api-design

jsonschema

database-schema

sails.js

sails-mongo